Modulation and coding scheme (mcs) table configuration method and device, and storage medium

Abstract

A method for configuring a modulation and coding scheme (MCS) table is performed by a terminal, and includes: determining to use at least one of a first MCS table subset or a second MCS table subset in response to meeting a first condition; wherein the first MCS table subset is at least a part of a table in a first MCS table, and the second MCS table subset is at least a part of a table in a second MCS table.

1 . A method for configuring a modulation and coding scheme (MCS) table, performed by a terminal, comprising:
 determining to use at least one of a first MCS table subset or a second MCS table subset in response to meeting a first condition;   wherein the first MCS table subset is at least a part of a table in a first MCS table, and the second MCS table subset is at least a part of a table in a second MCS table.   
     
     
         2 . The method according to  claim 1 , wherein the determining to use the at least one of the first MCS table subset or the second MCS table subset comprises at least one of:
 determining, according to a received implicit indication, to use the at least one of the first MCS table subset or the second MCS table subset; or   determining, according to an indicator of a received explicit indication, to use the at least one of the first MCS table subset or the second MCS table subset.   
     
     
         3 . The method according to  claim 1 , wherein the determining to use the at least one of the first MCS table subset or the second MCS table subset comprises at least one of:
 determining, according to a sequence used for scrambling cyclic redundancy check (CRC) in downlink control information (DCI), to use the at least one of the first MCS table subset or the second MCS table subset; or   determining, according to a received indicator, to use the at least one of the first MCS table subset or the second MCS table subset.   
     
     
         4 . The method according to  claim 1 , wherein a lowest spectral efficiency corresponding to an MCS index in the first MCS table subset is greater than a highest spectral efficiency corresponding to an MCS index in the second MCS table subset; or
 a lowest spectral efficiency corresponding to an MCS index in the first MCS table subset is equal to a highest spectral efficiency corresponding to an MCS index in the second MCS table subset.   
     
     
         5 . The method according to  claim 1 , further comprising:
 determining a first information field of downlink control information (DCI), wherein the first information field of the DCI comprises a parameter corresponding to at least one MCS index in the first MCS table subset or in the second MCS table subset.   
     
     
         6 . The method according to  claim 5 , wherein the first information field further comprises: a parameter for indicating a retransmission number. 
     
     
         7 . The method according to  claim 6 , wherein the retransmission number is selected from a plurality of different subsets of the retransmission number;
 different MCS table subsets correspond to the different subsets of the retransmission number.   
     
     
         8 . The method according to  claim 1 , wherein the first condition comprises one or a combination of following conditions:
 the MCS table subset to be used by the terminal being configured by a network side;   the terminal using a coverage enhancement function;   the terminal being of a first terminal type;   the terminal being of a first terminal type and using a first cell radio network temporary identifier (C-RNTI) for downlink control information (DCI) scrambling.   
     
     
         9 . The method according to  claim 3 , wherein the determining to use the at least one of the first MCS table subset or the second MCS table subset according to the sequence used for scrambling the CRC in the DCI comprises:
 determining to use the first MCS table subset in response to that the sequence used for scrambling the CRC is a cell radio network temporary identifier (C-RNTI); or   determining to use the second MCS table subset in response to that the sequence used for scrambling the CRC is a modulation and coding scheme cell radio network temporary identifier (MCS-C-RNTI).   
     
     
         10 .- 18 . (canceled) 
     
     
         19 . A terminal, comprising:
 a processor; and   a memory configured to store instructions executable by the processor,   wherein the processor is configured to:   determine to use at least one of a first modulation and coding scheme (MCS) table subset or a second MCS table subset in response to meeting a first condition;   wherein the first MCS table subset is at least a part of a table in a first MCS table, and the second MCS table subset is at least a part of a table in a second MCS table.   
     
     
         20 . (canceled) 
     
     
         21 . The terminal according to  claim 19 , wherein the processor is further configured to perform at least one of:
 determining, according to a received implicit indication, to use the at least one of the first MCS table subset or the second MCS table subset; or   determining, according to an indicator of a received explicit indication, to use the at least one of the first MCS table subset or the second MCS table subset.   
     
     
         22 . The terminal according to  claim 19 , wherein the processor is further configured to perform at least one of:
 determining, according to a sequence used for scrambling cyclic redundancy check (CRC) in downlink control information (DCI), to use the at least one of the first MCS table subset or the second MCS table subset; or   determining, according to a received indicator, to use the at least one of the first MCS table subset or the second MCS table subset.   
     
     
         23 . The terminal according to  claim 19 , wherein a lowest spectral efficiency corresponding to an MCS index in the first MCS table subset is greater than a highest spectral efficiency corresponding to an MCS index in the second MCS table subset; or
 a lowest spectral efficiency corresponding to an MCS index in the first MCS table subset is equal to a highest spectral efficiency corresponding to an MCS index in the second MCS table subset.   
     
     
         24 . The terminal according to  claim 19 , wherein the processor is further configured to perform:
 determining a first information field of downlink control information (DCI), wherein the first information field of the DCI comprises a parameter corresponding to at least one MCS index in the first MCS table subset or in the second MCS table subset.   
     
     
         25 . The terminal according to  claim 24 , wherein the first information field further comprises: a parameter for indicating a retransmission number. 
     
     
         26 . The terminal according to  claim 25 , wherein the retransmission number is selected from a plurality of different subsets of the retransmission number;
 different MCS table subsets correspond to the different subsets of the retransmission number.   
     
     
         27 . The terminal according to  claim 19 , wherein the first condition comprises one or a combination of following conditions:
 the MCS table subset to be used by the terminal being configured by a network side;   the terminal using a coverage enhancement function;   the terminal being of a first terminal type;   the terminal being of a first terminal type and using a first cell radio network temporary identifier (C-RNTI) for downlink control information (DCI) scrambling.   
     
     
         28 . The terminal according to  claim 22 , wherein the processor is further configured to perform:
 determining to use the first MCS table subset in response to that the sequence used for scrambling the CRC is a cell radio network temporary identifier (C-RNTI); or   determining to use the second MCS table subset in response to that the sequence used for scrambling the CRC is a modulation and coding scheme cell radio network temporary identifier (MCS-C-RNTI).   
     
     
         29 . A non-transitory computer-readable storage medium having stored therein instructions that, when executed by a processor of a terminal, cause the terminal to perform a method for configuring the modulation and coding scheme (MCS) table, the method comprising:
 determining to use at least one of a first MCS table subset or a second MCS table subset in response to meeting a first condition;   wherein the first MCS table subset is at least a part of a table in a first MCS table, and the second MCS table subset is at least a part of a table in a second MCS table.   
     
     
         30 . The non-transitory computer-readable storage medium according to  claim 29 , wherein the determining to use the at least one of the first MCS table subset or the second MCS table subset comprises at least one of:
 determining, according to a received implicit indication, to use the at least one of the first MCS table subset or the second MCS table subset; or   determining, according to an indicator of a received explicit indication, to use the at least one of the first MCS table subset or the second MCS table subset.   
     
     
         31 . The non-transitory computer-readable storage medium according to  claim 29 , wherein the determining to use the at least one of the first MCS table subset or the second MCS table subset comprises at least one of:
 determining, according to a sequence used for scrambling cyclic redundancy check (CRC) in downlink control information (DCI), to use the at least one of the first MCS table subset or the second MCS table subset; or   determining, according to a received indicator, to use the at least one of the first MCS table subset or the second MCS table subset.